_____ I admit that all these problems are difficult, I don’t agree that they cannot be solved.
#31404
A
Unless
B
While
C
Until
D
Since
推荐题目
English is a language shared by several diverse cultures，each of——uses it somewhat differently.
#30616
A
which
B
what
C
them
D
those
Jack is a common person, _______, I think, that will be found everywhere.
#34357
A
whom
B
who
C
one
D
he
Newton is known as a gifted scientist with very human weaknesses who stood at the point in history _______ magic ended and science began.
#33377
A
that
B
when
C
where
D
which
The medicine works more effectively _______ you drink some hot water after taking it.
#31652
A
as
B
until
C
although
D
if